C#访问IEnumerable集合

本文关键字:集合 IEnumerable 访问 | 更新日期: 2023-09-27 17:50:38

我对处理集合还很陌生,所以请耐心听我说,我的行话甚至可能不准确。

我让PetaPoco将查询结果作为IEnumerable返回,每个结果一个集合。我想评估集合,以便从每个集合中的特定字段中获得特定字符串。到目前为止,我能够迭代Enumerable,并且似乎能够按照下面的代码片段访问对象,但当我在调试中查看c.语言时,它只是字符串的第一个字符(例如,c.语言应该等于"JPY",它只等于"J"(

我这样做完全错了吗?感谢的建议

public void AddContactOrder(object sender, EventArgs e)
    {
        IEnumerable OrderFact = new OrdersFactsController().getOrderFacts(base.ModuleId);
        IEnumerator enumerator = OrderFact.GetEnumerator();
        var test = "";
        List<string> lang = new List<string>();
        while (enumerator.MoveNext())
        {
            OrderFact c = (OrderFact)enumerator.Current;
            if (c.Language == "JPY")
            {
                test = "okay";
            }
        }

}

getorderFacts((返回一个IEnumerable,其中T是OrderFact

public class OrderFact
{
    public int ID { get; set; }
    public int ModuleId { get; set; }
    public string ProdCode { get; set; }
    public string Language { get; set; }
    public string Currency { get; set; }
    public string KeyCodes { get; set; }
    public string OrderSourceCode { get; set; }
    public string OfferingCode { get; set; }
    public string JobNumber { get; set; }
    public DateTime CreatedDate { get; set; }
    public DateTime ModifiedDate { get; set; }
}

C#访问IEnumerable集合

最好只使用foreach循环:

foreach (var c in new OrdersFactsController().getOrderFacts(base.ModuleID))
{
    if (c.Language == "JPY")
        test = "okay";
}

您可以使用System.LinqAny扩展方法:

public void AddContactOrder(object sender, EventArgs e)
{
    var orderFacts = new OrdersFactsController().getOrderFacts(base.ModuleId);
    var test = orderFacts.Any(x => x.Language == "JPY") ? "okay" : "";
}
    public void AddContactOrder(object sender, EventArgs e)
    {
        IEnumerable<OrderFact> orderFacts = new OrdersFactsController().getOrderFacts(base.ModuleId);
        var test = "";
        if(orderFacts.Any(x => x.Language == "JPY")) test="okay";
    }

林克!